How to Measure the Output Shaft on a Turbo 350

Monster Transmission Presents Curt's Corner and How to Measure the Output Shaft on a Turbo 350.

The correct method of measuring the output shaft.

The Turbo 350 transmission is the transmission that was in most GM vehicles from the early 1960's to the early 1980's.

We'll dive more into the length of the output shaft on the 4x4 applications. All the shafts for the turbo 350 transmission has 27 teeth. The teeth count hasn't changed from the factory just the length of the shaft.

The easiest way to measure this is to have the transmission removed from the vehicle. You will need to place a flat surfaced item such as a ruler flush at the end of the shaft. Then measure the distance from the surface to the end of the shaft. The short shaft length is at .75". The middle size 4x4 shaft is a bit longer and measures at 5.5". This mid size shaft was most common in the 1980's. If you have a different length or different spline count then it is from an aftermarket kit.

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